TextureD3D: No-op on zero-sized CompressedTexImage. TEST=deqp/functional/gles3/negativetextureapi.html BUG=483282 Change-Id: Ifd9674c2d29dc7e3a5e620b7a043cdb38a923ca0 Reviewed-on: https://chromium-review.googlesource.com/356680 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>